Hard drives designed for businesses are generally considered more reliable than consumer…
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The comparison is between Seagate, Hitachi, and Western Digital. (The company has a few Toshiba and Samsung drives, but not enough for analysis.) Backblaze says they buy the least expensive drives that perform well, based on stress tests and a few weeks in production.

As with the previous analyses, Backblaze measured the reliability of the drives by looking at the annual failure rate, the average number of failures while running a drive for one year. Here is a pretty telling chart:

The company has also broken it down by drive model on their blog. The Hitachi GST Deskstar (7K2000, 5K3000, and 7K3000) had the lowest annual failure rates, from 0.9% to 1.1%. Meanwhile, the Seagate Barracuda Green had a whopping 120% annual failure rate (an average age of 0.8 years). While those were warranty replacement drives—likely refurbished ones already used—the other Seagate drives had failure rates between 3.8% and 25.4%.

Overall, most of the drives survived for at least three years, but looking at this data, you might want to consider going with a Hitachi or WD drive instead of Seagate, unless you read other reviews of a specific drive's reliability.